Some suppliers are now offering this reproduction piece (around $300). I'm considering getting one but am wondering if all 70-72 Chevelle dash assemblies were mfg. the same. I have a 70 SS Chevelle with the gauge package and the AM/FM mono radio. Should a stock 70-72 dash assembly look the same regardless of the type of stock radio you ordered? Want to make sure of the fit before I spend $300. The suppliers that offer this piece don't seem to know the answers for sure. Thanks.